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17 ore 16 min, 19 dic 1915 anni - Engineers S. E. Bramer, Jacob Roth, F. R. S. Kaplan, Simon Loeb and William Smith, Sr. create the first permanent metallurgical bond between copper and steel in Rankin, Pennsylvania

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Warren Steel

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17 ore 16 min, 19 dic 1915 anni
Adesso
~ 109 years ago
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